The best I can find according to documentation is to set one device in AP Mode another in Mulitbridge. But that sets up a separate AP on the Mulibridge side witch is far from efficient. Also it blocks detailed setup of the client mode found in pure Client (Station) mode like “Greenfield” mode.

Would you recommend a different setup for our use-case?
If not, could you provide an option for the above in a future FW release?

This means we somehow have to “hide” the secondary AP set up in mode-multibridge [WizFi630 B] and that we cannot enable the HT Greenfield mode. Hope you can push for an update in the future even if there is no plans